MCP Server

three.ws Vision MCP Server

Name: three.ws Vision MCP Server
Author: io.github.nirholas

io.github.nirholas/vision-mcp

Repository Registry

What is the three.ws Vision MCP server?

Image understanding for AI agents — analyze and describe any image via the three.ws pipeline.

How to install three.ws Vision

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

THREE_WS_BASE
Base URL of the three.ws API that serves the vision endpoint. Override only when self-hosting or targeting a preview deployment.
THREE_WS_TIMEOUT_MS
Per-request timeout in milliseconds for the vision call (the VLM may chain across free lanes before answering).
THREE_WS_API_KEY
Optional three.ws API key (bearer token). Not required — the vision endpoint serves anonymous callers on a free per-IP rate limit. Set it to raise your rate limit to the per-user tier. Never needed to access the free model.

Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "vision-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/vision-mcp"
      ],
      "env": {
        "THREE_WS_BASE": "<YOUR_THREE_WS_BASE>",
        "THREE_WS_TIMEOUT_MS": "<YOUR_THREE_WS_TIMEOUT_MS>",
        "THREE_WS_API_KEY": "<YOUR_THREE_WS_API_KEY>"
      }
    }
  }
}

Cursor

~/.cursor/mcp.json

{
  "mcpServers": {
    "vision-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/vision-mcp"
      ],
      "env": {
        "THREE_WS_BASE": "<YOUR_THREE_WS_BASE>",
        "THREE_WS_TIMEOUT_MS": "<YOUR_THREE_WS_TIMEOUT_MS>",
        "THREE_WS_API_KEY": "<YOUR_THREE_WS_API_KEY>"
      }
    }
  }
}

Windsurf

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "vision-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/vision-mcp"
      ],
      "env": {
        "THREE_WS_BASE": "<YOUR_THREE_WS_BASE>",
        "THREE_WS_TIMEOUT_MS": "<YOUR_THREE_WS_TIMEOUT_MS>",
        "THREE_WS_API_KEY": "<YOUR_THREE_WS_API_KEY>"
      }
    }
  }
}

VS Code

.vscode/mcp.json

{
  "servers": {
    "vision-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/vision-mcp"
      ],
      "env": {
        "THREE_WS_BASE": "<YOUR_THREE_WS_BASE>",
        "THREE_WS_TIMEOUT_MS": "<YOUR_THREE_WS_TIMEOUT_MS>",
        "THREE_WS_API_KEY": "<YOUR_THREE_WS_API_KEY>"
      }
    }
  }
}

Claude Code

claude mcp add vision-mcp --env THREE_WS_BASE=<YOUR_THREE_WS_BASE> --env THREE_WS_TIMEOUT_MS=<YOUR_THREE_WS_TIMEOUT_MS> --env THREE_WS_API_KEY=<YOUR_THREE_WS_API_KEY> -- npx -y @three-ws/vision-mcp

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